Global Patent Index - EP 1566466 A1

EP 1566466 A1 20050824 - Surface conditioner and method of surface conditioning

Title (en)

Surface conditioner and method of surface conditioning

Title (de)

Oberflächenkonditionierungsmittel und -Verfahren

Title (fr)

Composition et procédé de conditionnement de surfaces

Publication

EP 1566466 A1 20050824 (EN)

Application

EP 05003533 A 20050218

Priority

JP 2004044563 A 20040220

Abstract (en)

It is an obj ect of the present invention to provide a surface conditioner which can inhibit galvanic corrosion on an aluminum alloy during chemical conversion treatment and can form a sufficient chemical conversion coat when applied to an aluminum alloy and a high tensile strength steel sheet andhas the excellent stability of dispersion in a treatment bath. <??>A surface conditioner, containing zinc phosphate particles and having a pH of 3 to 12, wherein said zinc phosphate particles have D50 of 3 mu m or less and said surface conditioner contains at least one species selected from the group consisting of (1) carboxylate group-containing copolymers obtained by copolymerizing a monomer composition containing at least one species selected from the group consisting of acrylic acid, maleic acid, maleic anhydride, itaconic acid and itaconic anhydride in an amount less than 50% by weight and at least one species selected from the group consisting of a sulfonic acid monomer, styrene, olefin monomers, amino group-containing monomers and polyoxyalkylene derivatives expressed by the following formula (I); <CHEM> wherein Z is a residue of a compound having two hydroxyl groups, AOs are oxyalkylene groups having 2 to 18 carbon atoms, X is an unsaturated hydrocarbon group having 2 to 5 carbon atoms, R<1> is a hydrocarbon group having 1 to 40 carbon atoms, and a and b are identical to or different from each other and integers of 0 to 1000, and satisfy the relationship of a+b ≥ 1 in an amount more than 50% by weight, (2) polyamino acids having a constituent unit expressed by the following formula (II); <CHEM> wherein R<2> and R<3> are identical to or different from each other and are a straight-chain or branched alkyl group having 1 to 22 carbon atoms, a cycloalkyl group having 6 to 22 carbon atoms or an aryl group having 6 to 22 carbon atoms, and said R<2> and said R<3> may have a substituent including heteroatoms, and (3) phosphate esters expressed by the following formula (III) ; <CHEM> wherein R<4> is an alkyl group or an alkyl phenol group having 8 to 30 carbon atoms, and 1 is 0 or 1, m is 1 to 20 and n is 1, 2 or 3, or the following formula (IV); <CHEM> wherein h is an integer of 2 to 24 and i is 1 or 2.

IPC 1-7

C23C 22/78

IPC 8 full level

C23C 22/78 (2006.01)

CPC (source: EP KR US)

B62B 1/14 (2013.01 - KR); C23C 22/78 (2013.01 - EP US)

Citation (applicant)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 1566466 A1 20050824; EP 1566466 B1 20110406; AT E504672 T1 20110415; CA 2497752 A1 20050820; CA 2497752 C 20130205; CN 1657652 A 20050824; CN 1657652 B 20110511; DE 602005027279 D1 20110519; ES 2364405 T3 20110901; KR 20060042089 A 20060512; US 2005187326 A1 20050825; US 7767111 B2 20100803

DOCDB simple family (application)

EP 05003533 A 20050218; AT 05003533 T 20050218; CA 2497752 A 20050218; CN 200510008519 A 20050218; DE 602005027279 T 20050218; ES 05003533 T 20050218; KR 20050013373 A 20050218; US 6222805 A 20050218